<template>
  <Dialog v-model="dialogVisible" :title="dialogTitle">
    <el-form
      ref="formRef"
      v-loading="formLoading"
      :model="formData"
      :rules="formRules"
      label-width="100px"
    >
      <el-form-item label="课程名称" prop="name">
        <el-input v-model="formData.name" placeholder="请输入课程名称" />
      </el-form-item>
      <el-form-item label="课程组" prop="groupId">
        <el-select v-model="formData.groupId" placeholder="请选择课程组">
          <el-option v-for="item in groupList" :key="item.id" :label="item.name" :value="item.id" />
        </el-select>
      </el-form-item>
      <el-form-item label="课程排序" prop="courseSort">
        <el-input-number v-model="formData.courseSort" :max="10000000" :min="0"/>
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button :disabled="formLoading" type="primary" @click="submitForm">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script lang="ts" setup>
import { DICT_TYPE, getIntDictOptions } from '@/utils/dict'
import { Course, CourseApi } from '@/api/train/course'
import { CourseGroupApi } from '@/api/train/coursegroup'

/** 课程 表单 */
defineOptions({ name: 'CourseForm' })

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const groupList = ref([]) //课程组列表
const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formType = ref('') // 表单的类型：create - 新增；update - 修改
const formData = ref({
  id: undefined,
  name: undefined,
  groupId: undefined,
  price: undefined,
  intro: undefined,
  duration: undefined,
  singleLessonDuration: undefined,
  courseCover: undefined,
  courseSort: undefined,
  beginDate: undefined,
  endDate: undefined,
  vipRequired: undefined,
  status: undefined,
  enrollments: undefined,
  courseMark: undefined
})
const formRules = reactive({
  name: [{ required: true, message: '课程名称不能为空', trigger: 'blur' }],
  groupId: [{ required: true, message: '课程组必须选择', trigger: 'blur' }],
  price: [{ required: true, message: '课程价格不能为空', trigger: 'blur' }]
})
const formRef = ref() // 表单 Ref

/** 打开弹窗 */
const open = async (type: string, id?: number) => {
  dialogVisible.value = true
  dialogTitle.value = t('action.' + type)
  formType.value = type
  const pageParams = reactive({
    pageSize: 100
  })
  const group = await CourseGroupApi.getCourseGroupPage(pageParams)
  groupList.value = group.list
  resetForm()
  // 修改时，设置数据
  if (id) {
    formLoading.value = true
    try {
      formData.value = await CourseApi.getCourse(id)
    } finally {
      formLoading.value = false
    }
  }
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  await formRef.value.validate()
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value as unknown as Course
    if (formType.value === 'create') {
      await CourseApi.createCourse(data)
      message.success(t('common.createSuccess'))
    } else {
      await CourseApi.updateCourse(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    name: undefined,
    groupId: undefined,
    price: undefined,
    intro: undefined,
    duration: undefined,
    singleLessonDuration: undefined,
    courseCover: undefined,
    courseSort: undefined,
    beginDate: undefined,
    endDate: undefined,
    vipRequired: undefined,
    status: undefined,
    enrollments: undefined,
    courseMark: undefined
  }
  formRef.value?.resetFields()
}
</script>
